<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="(item,index) in cartList" :key="index">
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" :checked="item.isChecked==1" @change="updateChecked(item,$event)">
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl">
            <div class="item-msg">{{item.skuName}}</div>
          </li>
        
          <li class="cart-list-con4">
            <span class="price">{{item.skuPrice}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" @click="handler('minus',-1,item)" class="mins">-</a>
            <input autocomplete="off" type="text" @change="handler('change',$event.target.value,item)" :value="item.skuNum" minnum="1" class="itxt">
            <a href="javascript:void(0)" class="plus" @click="handler('add',1,item)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{item.skuNum*item.skuPrice}}</span>
          </li>
          <li class="cart-list-con7">
            <a  class="sindelet" @click="deleteCartById(item)">删除</a>
            <br>
            <a >移到收藏</a>
          </li>
        </ul>

        
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="isAllCheck&&cartList.length>0" @click="updateAllCartChecked($event)">
        <span>全选</span>
      </div>
      <div class="option">
        <a  @click="deleteAllCart">删除选中的商品</a>
        <a >移到我的关注</a>
        <a >清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{totalPrice}}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import throttle from "lodash/throttle";
import { mapState} from "vuex"
  export default {
    name: 'ShopCart',
    mounted(){
    this.getData()
    },
    
    methods:{
     async updateAllCartChecked(e){
      try {
        let isChecked = e.target.checked ? "1" : "0";
        //派发action
        await this.$store.dispatch("updateAllCartIsChecked", isChecked);
        this.getData();
      } catch (error) {
        alert(error.message);
      }
     },
    async  deleteAllCart(){
      try{
      await this.$store.dispatch("deleteAllCart")
       this.getData()
      }catch(error){
    alert(error.message)
      }
   
      },
       getData(){
          this.$store.dispatch("getCartList")
       },
      async deleteCartById(cart){
        
         try{
        await this.$store.dispatch("deleteCartList",cart.skuId)
           this.getData() 
         }catch(error){
         alert(error.message)
         }
       },
      handler:throttle(async function(type,number,cart){  
         switch(type){
          case "add":number=1;break;
          case "minus":number=cart.skuNum>1?-1:0;break;
          case "change":
          
            if(isNaN(number)||number<1)
            {
              number=0
            }else{
              number=parseInt(number)-cart.skuNum
            }
          }
            try{
            await this.$store.dispatch("shoppingCart",{skuId:cart.skuId,skuCount:number})
             this.getData()
          }catch(error){
          console.log(error)
          }
       },500),
  async  updateChecked(cart,event){
      let isChecked=event.target.checked?"1":"0"
      await this.$store.dispatch("updataCheckedByid",{skuId:cart.skuId,isChecked})
      this.getData()
    }
    },

    computed:{
      ...mapState({
        cartList:state=>state.shopcart.cartList||[]
      }),
      totalPrice(){
        let sum=0;
        this.cartList.forEach(item=>{
          if(item.isChecked==1){
           sum+=item.skuNum*item.skuPrice
          }
        })
        return sum
      },
      isAllCheck(){
        return this.cartList.every(item=>item.isChecked==1)
      }
    }

    

  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            width: 15%;
          }

          .cart-list-con2 {
            width: 35%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }

          .cart-list-con3 {
            width: 10%;

            .item-txt {
              text-align: center;
            }
          }

          .cart-list-con4 {
            width: 10%;

          }

          .cart-list-con5 {
            width: 17%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 10%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 12.5%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>